[libcamera-devel] [PATCH v3 0/4] Pass buffers to VIMC IPA

[Umang Jain]

Currently, there is no buffer passing on VIMC happening.
VIMC being a virtual test driver, doesn't have actual
parameter or statistics buffers. But that shouldn't stop
us leveraging VIMC for IPA IPC testing.

We will create mock dmabuf buffers using the video output
node. We will configure it with a single plane, small size
V4L2DeviceFormat and export buffers from there. This happens
during init(), so the actual requested configuration happens
during the normal configure()(We just hijack the video output
node for a while temporarily). 

This is the major change in v2. Other changes:
- Drop Actions and Events paradigm, use dedicated functions
  for operations via mojom interface.
- style check in 1/4 and 3/4
- commit messages rework

Changes in v3:
- Transform loops with better iteration options
- Drop V4L2VideoDevice::tryFormat() in 2/4
- Drop VimcCameraData::ipaBuffers_ in favor a local scoped vector 3/4
- Commits and comments rework

Laurent Pinchart (1):
  ipa: vimc: Add configure() function

Umang Jain (3):
  pipeline: vimc: Allocate mock IPA buffers
  ipa: vimc: Map and unmap buffers
  ipa: vimc: Send and retrieve FrameBuffers from IPA

 include/libcamera/ipa/vimc.mojom     | 19 +++++++-
 src/ipa/vimc/vimc.cpp                | 59 +++++++++++++++++++++++++
 src/libcamera/pipeline/vimc/vimc.cpp | 65 ++++++++++++++++++++++++++++
 3 files changed, 142 insertions(+), 1 deletion(-)

-- 
2.31.1